CN106441747B - Metal damper axial static rigidity test device - Google Patents
Metal damper axial static rigidity test device Download PDFInfo
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- CN106441747B CN106441747B CN201610816202.2A CN201610816202A CN106441747B CN 106441747 B CN106441747 B CN 106441747B CN 201610816202 A CN201610816202 A CN 201610816202A CN 106441747 B CN106441747 B CN 106441747B
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- briquetting
- rebasing
- metal
- proton block
- proton
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
Abstract
The invention discloses a kind of metal damper axial static rigidity test devices, including single pad briquetting, proton block and single rebasing seat, single pad briquetting major diameter M1 is equal to single rebasing seat central diameter L2, proton block internal diameter T2 is equal to single rebasing seat path L1, single pad briquetting path M2 is between single rebasing seat path L1 and proton block outer diameter T1, three is set in together successively, after suit：The mould dress height N2 of single pad briquetting is less than the height S1 of proton block, upper surfaces of single rebasing seat path height H1 without departing from single pad briquetting.The present invention solves the problems, such as that axial static rigidity measurement result is not inconsistent with actual working state, it solves the problems, such as axis, radial constraint that current test method do not solve, axial pre-pressing problem, be radially expanded problem, it is used in combination proton block to simulate metal damper actual working state, it is easy to operate.
Description
Technical field
The invention belongs to dynamics environment technical fields, and in particular to the axial static rigidity test dress of common metal damper
It sets.
Background technology
Common metal damper, such as the operation principle of metal-rubber, spring compound vibration-damper is all to pass through self-deformation
Vibrational energy is absorbed, then is damped with itself and consumes energy.By taking metal-rubber as an example, it is made with loose by special process
The macromolecular hole of intermeshing rubber like is presented between the wire in shaped article for the functional form damping material of porous feature
Gap structure.In vibration processes, damping vibration attenuation function is played in phase mutual friction between wire while metal-rubber flexible deformation.Tool
There is the metal shock reducing pad of similar functions to belong to core element in damper, and accurately obtains the axial static rigidity of the class component
Parameter is for great significance for design.
Common metal damper all shows short round under certain displacement condition, and damper is allowed to be operated in the range
Preferable effectiveness in vibration suppression can be made it have.The method for measuring the region at present is axial static rigidity test.The axis of metal damper
It is that the power and displacement curve of metal shock reducing pad are obtained with static or quasi-static method to Static stiffness test.It can be with by curve
The rigidity of the structure, damping characteristic are calculated, and then obtains the elasticity modulus of core element, the characteristics such as dissipation energy are clearly being shaken
Under dynamic input condition, theoretically damping efficiency can also be calculated by curve, resonate the design parameters such as amplification factor, therefore axial
Static stiffness measurement method is played a crucial role for obtaining metal shock reducing pad and damper performance.
The axial static rigidity test process of metal damper is as follows at present：
The special-purpose metal gasket of the higher depth of parallelism is placed at testing of materials machine table top center, metal shock reducing pad is placed on pad
At piece center, then another special washer is placed on metal shock reducing pad, as shown in Figure 1, Material Testing Machine loading end is detached from
Special washer starts to be loaded into regulation force value, the deformation data and record of metal shock reducing pad is read, as test result.
The test method has reacted the axial static rigidity of metal shock reducing pad to a certain extent, but is not inconsistent with real work situation
It closes, the reason is as follows that：
1. in real work, metal shock reducing pad is wrapped up by steel bushing half, and common metal damper structure is as shown in Figure 2.Metal
Exist in the deformation process of cushion blocking, between steel bushing and metal shock reducing pad and rubs, and the axial static rigidity measurement method more than using,
The influence for then having ignored the friction, does not meet with actual use.
2. after damper installs, metal shock reducing pad is axially having certain pre-pressing.And former measurement method is not examined
Consider the factor.
3. metal damper Poisson's ratio is positive number, axial compression deformation, expansion is radially had, but former measurement method does not have steel
It covers and is constrained as the outer radial of metal shock reducing pad, measure and actual working state deviation is larger.
Invention content
For prior art defect, the present invention provides a kind of metal damper axial static rigidity test device, utilizes the dress
The deficiency of existing method can effectively be avoided by setting, and simulate the power between metal damper mechanical parts in actual work well
Contact condition is learned, accurately axial static rigidity test curve is established.
A kind of metal damper axial static rigidity test device, including single pad briquetting, proton block and single rebasing seat, single pad pressure
Block major diameter M1 is equal to single rebasing seat central diameter L2, and proton block internal diameter T2 is equal to single rebasing seat path L1, and single briquetting path M2 that pads is in list
Between rebasing seat path L1 and proton block outer diameter T1, three is set in together successively, after suit：The mould dress height N2 of single pad briquetting
Less than the height S1 of proton block, upper surfaces of single rebasing seat path height H1 without departing from single pad briquetting.
The metal damper includes metal-rubber, spring composition metal damper and disc spring damper.
Further, the proton block internal diameter T2 tolerances+0.03mm~+0.08mm, single rebasing seat path L1 tolerances-
0.05mm~0mm.
Further, single pad briquetting major diameter M1 tolerances+0.35mm~+0.40mm, proton block outer diameter T1 tolerances+
0.23mm~+0.27mm.
Beneficial effects of the present invention are as follows：
The present invention solves the problems, such as that axial static rigidity measurement result is not inconsistent with actual working state, solves current test
Axis that method does not solve, axial pre-pressing problem, is radially expanded problem at radial constraint problem, and proton block is used in combination to simulate gold
Belong to damper actual working state, it is easy to operate so that test result has more directive significance, subtracts to metal shock reducing pad and metal
The design of device of shaking plays an important roll.
Description of the drawings
Fig. 1 is existing metal damper axial static rigidity instrumentation plan；
1- gasket 3- metal shock reducings pad 7- testing of materials machine table tops
Fig. 2 is existing metal damper structural schematic diagram；
1- gasket 2- sleeve 3- metal shock reducings pad 4- steel bushing 5- mounting plate 6- nuts
Fig. 3 is single pad base schematic diagram of the invention；
The mono- rebasing mono- rebasing mono- rebasing mono- rebasing seat path height H2- of seat major diameter H1- of seat central diameter L3- of seat path L2- of L1- are mono-
The rebasing mono- rebasing seat major diameter height of seat central diameter height H3-
Fig. 4 is single pad briquetting schematic diagram of the invention；
The mono- pad briquetting mould dress height of the mono- padded N2- of pad briquetting of the mono- pad briquetting path N1- of the mono- pad briquetting major diameter M2- of M1-
Fig. 5 is proton block schematic diagram of the present invention；
T1- proton block outer diameter T2- proton block internal diameter S1- proton block height
Fig. 6 is test device structural schematic diagram of the present invention；
The mono- rebasing seat 7- testing of materials machine table tops of the mono- pad briquetting 9- protons block 10- of 8-
Specific implementation mode
Technical scheme of the present invention is described in further details with reference to the accompanying drawings and detailed description.Obviously, institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention,
The every other embodiment that those skilled in the art are obtained without making creative work, belongs to the present invention and wants
Seek the range of protection.
As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, metal damper axial static rigidity test device includes single rebasing seat, the structure
Play the role of support and simulation damper sleeve, being combined with metal shock reducing pad can be to metal shock reducing pad radial direction and axis after installing
To constraint；Single pad briquetting, the steel bushing of the structural simulation damper can give metal shock reducing pad radial and axial constraint, with single pad
Metal shock reducing pad work stress can be simulated after base engagement；Proton block, which, which is mounted on, subtracts
The dimensional fits relationship shaken after device between other mechanical parts, and in view of the axial pre-pressing of damper.
Proton block id tolerance+0.03mm~+0.08mm, single rebasing seat path L1 tolerances -0.05mm~0mm, between the two
Gap coordinates；Single pad briquetting major diameter M1 tolerances+0.35mm~+0.40mm, proton block outer diameter tolerance+0.23mm~+0.27mm, the two
Clearance fit；Single rebasing high H1 of seat path is 1.5 times of proton block height, it is ensured that when axial static rigidity is tested, proton block is in material
The entire compression process of testing machine, single rebasing seat path H1 can all be contacted with proton block, while such height ratio, be avoided
Single rebasing seat path L1 planes, higher than plane M2 on single pad briquetting, prevent Material Testing Machine loading surface from directly adding in Compressing Engineering
It is loaded on single rebasing seat, linear Stiffness mutation is caused to increase, test equipment error.
Single rebasing seat L2 is equal with T1, the true contact relation for simulating metal damper working condition, when L2 is more than
When T1, proton block and single pad floor installation are inconvenient, and L2 is less than T1 can cause proton block forced area to reduce again, not with actual loading
Symbol.Size design sequencing is T1, T2, S1, M2, L1, N2, M1, L3, L2, H3, H2, H1, N1.
Operation principle：
After the combination of axial static rigidity test device, it is placed on testing machine platform central position.Testing of materials compressing head away from
When single pad briquetting upper surface 1mm, reduces loading velocity and reset power and shift value, then proceed to load, when loading force is
Stop load, recording materials displacement of testing machine numerical value when 20N.It can reduce single rebasing seat, proton block, single pad pressure with the power of 20N
Joint gap between block axial direction, and testing of materials compressing head stop position be exactly metal shock reducing pad be mounted on damper in
Actual height.Start to unload, substituting proton block with metal shock reducing pad is mounted on single rebasing seat, and repetition is loaded at record displacement
Stop load, testing machine loading force and displacement are reset simultaneously and start to load again, the power and deformation curve hereafter obtained is exactly gold
Belong to the axial static rigidity test curve of cushion blocking.
Apply mechanical condition identical with practical application to metal shock reducing pad by proton block, single pad briquetting, single rebasing seat.
The loading force of Material Testing Machine is transmitted while single pad briquetting applies radial and axial constraint to metal shock reducing pad external structure
Give metal shock reducing pad.Single rebasing seat allows metal shock reducing pad while applying radial and axial constraint to metal shock reducing pad internal structure
Smoothly it is placed in the center of Material Testing Machine.Proton block is the core of metal shock reducing pad stiffness measurement method, height
The directly dimensional height of simulation metal shock reducing pad actual installation.By proton block and apply small in axial static rigidity measurement process
Contact force removes mechanical clearance, finds compression contact zero-bit, i.e., the displacement A after pre-pressing.Again matter is replaced with metal shock reducing pad
Sub-block is compressed to A, and it is exactly to simulate shaking for metal shock reducing pad real work that load is continued to after Material Testing Machine is reset
Dynamic displacement.
By taking metal-rubber as an example, carry out axial static rigidity test.
Single rebasing seat, single pad briquetting, proton block size relationship are shown in Table 1.Wherein T1, T2, S1, M2, L1, N2 are that metal subtracts
Shake the design parameter of device, according to all structure sizes of size design metal-rubber axial static rigidity test device in table 1.
The single rebasing seat of table 1, single pad briquetting, proton block size relationship
Note：Dimensions above relationship is multiple.Example, H1=N1
Testing procedure is as follows：
Step 1：Using 1 tonne of Material Testing Machine, accuracy of machines is less than 4/1000ths, and mesa diameter size is more than 10cm,
Load pressure head diameter 4cm to 10cm.Axially loaded displacement is more than 50cm.Material Testing Machine has periodic inspection and using day in effect
In date.
Step 2：According to metal damper performance requirement, metal rubber structure parameter, T1, T2, S1, M2, L1, N2 are designed.
Step 3：According to the axially loaded Static stiffness device of metal rubber structure size design, size relationship is shown in Table 1.
Step 3.1：According to design size T1, T2, S1, M2, L1, N2, other device parameters and tolerance are determined, and add respectively
Work production list pads briquetting, proton block, single rebasing seat.
Step 3.2：Device after processing is subjected to ultrasonic cleaning, removes surface oil stain, and trial assembly, confirm three parts it
Between have clearance fit.
Step 4：Axially loaded Static stiffness device is placed on testing of materials machine table top center.
Step 4.1：Single rebasing seat is first placed on testing of materials machine table top center, it is ensured that single pad base center and the testing of materials
Compressing head center is point-blank.
Step 4.2：Proton block is placed in single rebasing seat path, checks that proton block lower face and pedestal central diameter upper surface connect
It touches.
Step 4.3：Single pad briquetting is placed on proton block, checks that proton block upper surface and single pad briquetting major diameter inner surface connect
It touches.
Step 4.4：During mounted axial static rigidity measuring device is adjusted, it is ensured that three mechanical parts center lines and material
Expect that testing machine loading head center line overlaps (or within deviation 1mm).
Step 5：Riding material testing machine moves down crossbeam with 100mm/min speed, until pressure head lower face is padded with single
Briquetting upper surface directly redirects next step at a distance of from 10cm if initial distance is less than 10cm.
Step 6：When briquetting upper surface is padded apart from less than 10cm, adjustment Material Testing Machine load speed in pressure head lower face with single
Degree is 10mm/min, continues to load until pressure head of testing machine with single pad briquetting upper surface at a distance of 1mm.If initial distance is less than 1mm,
It then needs rising to load pressure head and repeats the step at a distance of the positions 10cm.
Step 7：Reduction head velocity is 1mm/min, and setting Material Testing Machine firmly controls controller, control force 20N
When stop.
Step 8：Proceed by experiment.
Step 9：After Material Testing Machine stops, controller is firmly controlled by Material Testing Machine and resets displacement.
Step 10：Start to unload, control Material Testing Machine speed is 50mm/min until pressure head of testing machine and single pad briquetting
Upper surface distance is more than 10cm, stops testing machine.
Step 11：Singlehanded band rubber gloves pin single rebasing seat and it are not allowed to have relative movement on testing of materials machine table top,
Another branch hand removes single pad briquetting and proton block respectively, and metal-rubber is replaced protoplasm sub-block locations, then single pad briquetting is placed on
Above metal-rubber, whole process ensures that single rebasing seat is not relatively moved with Material Testing Machine.
Step 12：Whether parallel with single pad base end face L3 install rear checklist pad briquetting upper surface.If without if
It finely tunes.
Step 13：Repeat step 5 and step 6.
Step 14：It is 1mm/min to reduce head velocity again, with Bit andits control, when setting displacement is 0mm, the testing of materials
Machine stops.
Step 15：Proceed by experiment.
Step 16：After Material Testing Machine stops, loading force is reset by controller.
Step 17：Holding loading velocity is 1mm/min, proceeds by power and displacement curve test.
Step 18：Off-test obtains power and displacement curve.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments are it will be apparent that as defined herein one for the patented technology personnel of this field
As principle can realize in other embodiments without departing from the present invention.Therefore, the present invention will not be limited
It is formed on the embodiments shown herein, and is to fit to most wide model consistent with the principles and novel features disclosed in this article
It encloses.
Claims (4)
1. a kind of metal damper axial static rigidity test device, which is characterized in that rebasing including single pad briquetting, proton block and list
Seat, single briquetting major diameter M1 that pads are equal to single rebasing seat path L1 equal to single rebasing seat central diameter L2, proton block internal diameter T2, and single pad briquetting is small
Diameter M2 is between single rebasing seat path L1 and proton block outer diameter T1, and three is set in together successively, after suit：The mould of single pad briquetting
Fill the height S1 that height N2 is less than proton block, upper surfaces of single rebasing seat path height H1 without departing from single pad briquetting.
2. test device according to claim 1, which is characterized in that the metal damper includes metal-rubber, spring
Composition metal damper and disc spring damper.
3. test device according to claim 1 or 2, which is characterized in that the proton block internal diameter T2 tolerances+0.03mm~
+ 0.08mm, single rebasing seat path L1 tolerances -0.05mm~0mm.
4. test device according to claim 1 or 2, which is characterized in that single pad briquetting major diameter M1 tolerances+0.35mm
~+0.40mm, proton block outer diameter T1 tolerances+0.23mm~+0.27mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610816202.2A CN106441747B (en) | 2016-09-12 | 2016-09-12 | Metal damper axial static rigidity test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610816202.2A CN106441747B (en) | 2016-09-12 | 2016-09-12 | Metal damper axial static rigidity test device |
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| CN107870052B (en) * | 2017-10-20 | 2020-01-31 | 重庆大学 | miniature optical fiber Fabry-Perot pressure sensor |
| CN108036907B (en) * | 2017-12-28 | 2023-07-04 | 长沙理工大学 | Static stiffness testing device for superposed valve plates of cylinder type shock absorber |
| CN111397883B (en) * | 2020-04-14 | 2021-11-02 | 北京汽车集团越野车有限公司 | Sliding column buffer block bench test tool |
| CN112446088B (en) * | 2020-10-29 | 2024-04-09 | 渤海造船厂集团有限公司 | Vibration damper installation performance parameter optimization screening device and method |
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| FR2930029B1 (en) * | 2008-04-11 | 2010-06-11 | Anvis Sd France S A S | METHOD AND DEVICE FOR MONITORING THE CORRECT OPERATION OF A HYDRO ELASTIC BLADE, BEARING OR JOINT. |
| KR101910215B1 (en) * | 2010-12-29 | 2018-12-19 | 뉴포트 코포레이션 | Tunable vibration dampers and methods of manufacture and tuning |
| CN203745209U (en) * | 2014-03-14 | 2014-07-30 | 吉林大学 | Bending and twisting static rigidity test system for white car body structure |
| CN204389150U (en) * | 2014-12-30 | 2015-06-10 | 广东西电动力科技股份有限公司 | A kind of vibroshock static properties testing table |
| CN204461737U (en) * | 2015-03-17 | 2015-07-08 | 青岛科技大学 | The axial dynamic property of a kind of rubber shock absorber detects servicing unit |
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